A.persistence
B.pulse repetition rate
C.pulse length
D.rotation rate
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A.carrier frequency
B.pulse repetition rate
C.pulse length
D.pulse repetition time
A.magnetron
B.receiver
C.indicator
D.modulator
A.transmitter
B.antenna system
C.indicator
D.modulator
A.persistence
B.pulse repetition rate
C.pulse length
D.resolution
A.Relative
B.TRUE
C.Compass
D.Magnetic
最新試題
The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
Deviation in a compass is caused by the（）.
A deadhead is a(n)（）.
A radar display which is oriented，so that north is always at the top of the screen，is called a(n)（）.
An electronic depth finder operates on the principle that（）.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes?（）.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
A radar display in which North is always at the top of the screen is a(n)（）.
A FICTIVE LINE DISPLAYED ON THE RADAR SCREEN SEPARATING THE FAIRWAY FOR INBOUND AND OUTBOUND VESSELS SO THAT THEY CAN SAFELY PASS EACH OTHER defines（）.